1 files changed, 48 insertions, 0 deletions
diff --git a/dom/base/MessageListenerManager.cpp b/dom/base/MessageListenerManager.cpp
new file mode 100644
index 0000000000..ffdc630830
--- /dev/null
+++ b/dom/base/MessageListenerManager.cpp
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/MessageListenerManager.h"
+#include "mozilla/dom/MessageBroadcaster.h"
+
+namespace mozilla::dom {
+
+MessageListenerManager::MessageListenerManager(
+    ipc::MessageManagerCallback* aCallback, MessageBroadcaster* aParentManager,
+    ipc::MessageManagerFlags aFlags)
+    : nsFrameMessageManager(aCallback, aFlags),
+      mParentManager(aParentManager) {}
+
+MessageListenerManager::~MessageListenerManager() = default;
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MessageListenerManager)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+NS_INTERFACE_MAP_END_INHERITING(nsFrameMessageManager)
+NS_IMPL_ADDREF_INHERITED(MessageListenerManager, nsFrameMessageManager)
+NS_IMPL_RELEASE_INHERITED(MessageListenerManager, nsFrameMessageManager)
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(MessageListenerManager)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MessageListenerManager,
+                                                  nsFrameMessageManager)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParentManager)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MessageListenerManager,
+                                               nsFrameMessageManager)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MessageListenerManager,
+                                                nsFrameMessageManager)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mParentManager)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+void MessageListenerManager::ClearParentManager(bool aRemove) {
+  if (aRemove && mParentManager) {
+    mParentManager->RemoveChildManager(this);
+  }
+  mParentManager = nullptr;
+}
+
+}  // namespace mozilla::dom